linux grub用grub-md5-crypt成生md5密码的方法

linux grub用grub-md5-crypt成生md5密码的方法

实验环境：Red Hat Enterprise Linux Server release 6.5 (Santiago)

[root@martin ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 6.5 (Santiago)

[root@martin ~]# grub-md5-crypt
Password:                    #这是输入：123456
Retype password:       #再次输入：123456
$1$xdRKQ/$43ZXGkk1yziGE12Vlqgg71     #这是123456通过grub-md5-crypt进行加密后产生的值

[root@martin ~]# vi /etc/grub.conf 


# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/mapper/VolGroup-lv_root
#          initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz

password  --md5  $1$xdRKQ/$43ZXGkk1yziGE12Vlqgg71     #l添加123456通过grub-md5-crypt进行加密后产生的值，或者(passoword=123456)

#password=123456                                                  #或者(passoword=123456)

hiddenmenu
title Oracle Linux Server Unbreakable Enterprise Kernel (3.8.13-16.2.1.el6uek.x86_64)
        root (hd0,0)
        kernel /vmlinuz-3.8.13-16.2.1.el6uek.x86_64 ro root=/dev/mapper/VolGroup-lv_root r
d_NO_LUKS rd_NO_MD rd_LVM_LV=VolGroup/lv_swap  LANG=zh_CN.UTF-8 rd_LVM_LV=VolGroup/lv_root  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet crashkernel=128M        initrd /initramfs-3.8.13-16.2.1.el6uek.x86_64.img
title Oracle Linux Server Red Hat Compatible Kernel (2.6.32-431.el6.x86_64)
        root (hd0,0)
        kernel /vmlinuz-2.6.32-431.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_L
UKS rd_NO_MD rd_LVM_LV=VolGroup/lv_swap crashkernel=auto LANG=zh_CN.UTF-8 rd_LVM_LV=VolGroup/lv_root  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet        initrd /initramfs-2.6.32-431.el6.x86_64.img

这样就给grub 加密，再通单用户修改root 密码时，需要使用密码！多了一道门！

grub 加密后还可以通过安装光盘进行破解。。。。